They really look sharp, very sharp.

他们看上去很显眼，非常显眼。

麻省理工公开课 - 固态化学导论课程节选

The little darlings must look sharp or they and their parents might lose face.

CNN: LITTLE EMPERORS

This jobs bill connects the long-term unemployed to temporary work to keep their skills sharp while they look for a job, and it gives hundreds of thousands of young people the hope of a job next summer.

WHITEHOUSE: Weekly Address: Passing the American Jobs Act

While the first felines of the 1950s were ferocious, with yellow eyes and sharp claws, by the 1960s they had a playful, cublike look.

WSJ: The Sublime Cats of Cartier